inside america's most famous home. beyond the velvet ropes of public tours, our visit shows the grand public places as well as those rarely-seep space. -- seen spaces. and saturday at # p.m. eastern, the capitol, one of america's most symbolic structures. american icons, three memorable nights thursday, friday, and saturday at 8 p.m. eastern on c-span. and get your own copy of american icons, a three-disc dvd set. it's $24.95 plus shipping and handling. order online. >> now an event with john limbert, the newly appointed deputy assistant of state for iran. he was held hostage from 1979-1981. from the middle east institute in washington, this is just over an hour. >> quite an overflow crowd. this is all, i guess it's not unexpected, but i'll tell you the background to this invitation which is rather ironic. gives me great pleasure to introduce ambassador john limbert today, and he's here to discuss his very timely book, "negotiating with iran: wrestling with the ghosts of history," it'll be on sale downstairs after the